反应详情

Tert-butyl bromoacetate (27 μL, 0.18 mmol) was added to a suspension of 1-[6-(4-methoxy-benzylamino)-1H-pyrrolo[2,3-b]pyridin-3-yl]-ethanone (0.17 mmol) and potassium carbonate (27.5 mg, 0.20 mmol) in CH3CN (0.33 mL) and THF (0.33 mL). The reaction mixture was stirred at RT for 7 h. Potassium carbonate (27.5 mg, 0.20 mmol) and tert-butyl bromoacetate (27 μL, 0.18 mmol) were added again and stirring was continued overnight, this operation was repeated the next day. The suspension was filtered, the filtrate concentrated under reduced pressure and the crude residue was purified by flash column chromatography on silica gel (CH2Cl2 to CH2Cl2/MeOH 98:2). TLC, Rf (CH2Cl2/MeOH 9:1)=0.9; MS (UPLC/MS): 410.2 [M+H]+, 819.4 [2M+H]+, 841.3 [2M+Na]+, 454.1 [M+HCOO]−; tR (HPLC conditions f): 2.30 min.

1. stirringstirring
2. waitwas continued overnight
3. filtrationThe suspension was filtered
4. concentrationthe filtrate concentrated under reduced pressure
5. customthe crude residue was purified by flash column chromatography on silica gel (CH2Cl2 to CH2Cl2/MeOH 98:2)
6. custom2.30 min.